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United States Patent | 5,077,367 |
Campbell, Jr. ,   et al. | December 31, 1991 |
Syndiotactic homopolymers of an arylcyclobutene functional monomer and syndiotactic copolymers of an arylcyclobutene functional monomer and a vinylaromatic monomer are prepared by conducting the polymerization in the presence of a catalytic amount of a suitable coordination catalyst such as the reaction product of polymethylaluminoxane and a transition metal compound.
Inventors: | Campbell, Jr.; Richard E. (Midland, MI); DeVries; Robert A. (Midland, MI) |
Assignee: | The Dow Chemical Company (Midland, MI) |
Appl. No.: | 541455 |
Filed: | June 22, 1990 |
Current U.S. Class: | 526/284; 525/203; 525/210; 525/242; 525/333.3; 526/160; 526/265; 526/274; 526/280; 526/902; 526/943; 528/503 |
Intern'l Class: | C08F 212/08 |
Field of Search: | 526/160,280,284,347,265,274 525/333.3,210,203,242 528/481,503 |
3335121 | Aug., 1967 | Natta et al. | 526/351. |
4540763 | Sep., 1985 | Kirchhoff | 584/24. |
4570011 | Feb., 1986 | So | 560/410. |
4667004 | May., 1987 | Wong | 526/159. |
4667005 | May., 1987 | Wong | 526/159. |
Hackh's Chemical Dictionary, J. Grant (ed.) McGraw-Hill, Inc., N.Y., 62, 1969. |